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| 1. |
When a (60W,220V) bulb and a (100 W, 220 V) bulb are connected in series, then which bulb will glow brighter? |
| Answer» SOLUTION :The RESISTANCE of the bulb is given by `R=(V^(2))/(P)`. So, the resistance of 60 W bulb is more than the resistance of 100 W bulb. When they are connected in series, the current through both bulbs is same. Hence 60 W bulb will be more BRIGHTER because `P=I^(2)R`. | |